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(No Model.)

2 Sheets-Sheet 1. R. L. HATTERSLEY & J. HILL. SHEDDING MECHANISM FOR LOOMS. No. 437,195. Patented Sept. 30, 1890.-

3 (No Model.) I r 2 Sheets-Shet 2.

R. L. HATTERSLEY & JVHILL. SHEDDING MECHANISM FOR LOOMS.

No. 437,195. Patented se mo,

UNITE STATES PATENT OFFICE.

, RICHARD L. HATTERSLEY AND JAMES HILL, OF KEIGHLEY, ENGLAND.

SHEDDiNG MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 437,195, dated September 30, 1890.

Application filed January 7, 1890. Serial No. 336,177- (No model.) Patented in England September 26, 1888, No. 13,859.

To all whom it may concern.-

Be it known that we, RICHARD LONGDEN HATTERSLEY and JAMES HILL, subjects of the Queen of Great Britain, residing at Keighley, in the county of York, England, have invented certain new and useful Improvements in Shedding Mechanisms for Looms, (for which we have obtained Letters Patent in England, No. 13,859, of September 26, 1888,) of which the following is a full, clear, and exact description.

Our invention relates to loom -shedding mechanisms of the class wherein levers having operating-catches attached to or hinged upon their extremities are mounted about their center or middle parts upon other levers for eifecting the desired changes of position in the heddles, (one style or arrangement of this class of mechanism being fully described in the specification of our United States Patent No. 383,465 dated May 29, 1888;) and our said invention consists of arranging and constructin g certain partsused in connection with these said shedding mechanismsin such amanner that a more even and better opening is made in the warp for the passage of the shuttle, and the object well known as lagging back (which means effecting a reversal in the direction of motion of the pattern-cylinder) may be accomplished in the said shedding mechanisms when a pattern mechanism having peg-lags, each. carrying two rows or series of indicating-pegs, is employed. This object we attain by the mechanism illustrated in the accompanying drawings- Figure 1 of which is a front elevation of a shedding mechanism that may be applied to a loom in any of the. well-known ways, and Fig. 3 is a top view of the parts shown in Fig. 1, while Fig. 2 is a back elevation of a portion of the said mechanism. Fig. 4 is a detail drawing of partahereinafter referred to, having the frame-work omitted for the sake of clearness.

Similar letters and figures refer to similar parts throughout the several views.

The catches a and c are attached to or hinged upon the levers b, which are mounted upon the levers f, the said catches a and a. being used in place of those described in our patent, No. 383,465, (above referred to,) as being mounted upon the swinglevers 68,

while the levers b and f, in connection with this present specification, correspond with those marked 68 and 47, respectively, in the said Patent No. 383, t65, the functions of these several levers in each case being identical. The formation or configuration of the catches'a and a is common,being somewhatas is shown by Fig. 4. However, these catches according to this invention are made of varied lengths, increasing progressively from those a Fig. 3, at the back part of the machine to those a Fig. 3, at the front part thereof, (said letters a and a referring to the series of catches a as well as to the series of catches a;) or, in other words, the catch a which is near the back of the machine, is made of a suitable length, while the catch a is of an appropriately longer length, the catches arranged be tween the two varyingin length and arrangement, as shown by Fig. 3.

The draw-bars c c are arranged to suit the positions of the hooks on these catches a and a, and are coupled at suitable places to their operating-levers d and d by the rods 6 e and e 6 respectively, so that when the catches a or a are in the position shown in Figs. 1 and 3 their respective draw-bar c or a, when at the inner extreme of its movement, shall be about parallel with the hooks on the corresponding set of the said catches, as shown at c, Fig. 3, the position shown in Fig. 1 being the position assumed by the catches a and a when the levers f, to which they are coupled by their swing-levers b, are in position for the heddles attached (in the well-known manner) to them to be at the extremity of the movement downward.

By the coupling of the draw-bars c c to the levers d d, as above described-that is to say, the jointings of the rods 6 e being arranged to be nearer to the center d of the lever (Z than are those of the rods e e to the center 01 of the lever d-the outer ends of said bars 0 and c that are near or toward the catches a will be moved through a greater space than are their other ends. Consequently those of the said catches that are at, near, or toward these parts will in like degree be moved through a greater space, as also will the heddles that are joined to the parts attached to and operated by those catches, by which means a more even shed or opening is made ICO in the warp for the passage of the shuttle, as is well understood.

By arranging and forming the series of catches a and a as above described, instead of forming the inner surface of the stop-bar 1) inclined to eifect the object desired, it is found that the tendency of said catches a and a to crowd upon each or to slip together when being operated by their respective draw-bars c and c is entirely avoided.

The attainment of the object well-known as lagging back is eitected as follows: In the drawings we show pattern mechanism having peg-lags C, each of which carries two rows or series of indicating-pegs D, one of these rows or series being to operate the catches a through the medium of the levers t and needles r, while-the other operates the catches a through the medium of the levers 6, each having a projection t, as is well known. This requires the pattern-cylinder to be operated only at eachalternate movement of the heddles, one movement of the said cylinder indicating for two separate divisions in the warp, as is well known to those conversant with this class of shedding mechanism. For the purpose of securing the object specified, we make use of an arrangement of parts whereby the liability of the said lags being disarranged, so as to place the catches upon which they operate at cross purposes when the operator changes the ratchet mechanism for the said purpose of lagging back, is entirely avoided. To this end, in addition to the ordinary ratchet-wheel 9 which is mounted upon the cylinder-shaft h in the usual well-known manner, we mount on the said shaft it another ratchet-wheel g, but in such manner that its teeth g are opposed to its operating-ratchet 70, so that while the ratchet which operates the ratchetwhecl when permitted to act, pushes the said wheel 9 so as to rotate the pattern-cylinder in the direction indicated by the arrow lby, say, the forward movement of lever (1, upon which it is mounted, the ratchet k, which operates the ratchet-wheel g when permitted to act, will rotate the said cylinder in the opposite direction to that indicated by the arrow Z by the return, say, backward movement of the lever d to which it, as well as the ratchet k, is mounted. The operator by the pin m, attached to thelever a, which is mounted loosely upon the shaft h and operated by the rod 0, manually places one ratchet 70 or k, as described, out of and the other ratchet 7; or k into position at the proper time to effect this interchange of action. When the said rod 0 is moved to cause the said pin m to recede from the ratchet 7c and carry the ratchet k clear of the ratchet-wheel g the weighted end k of the ratchet 7o by gravity brings said ratchet 76 into operating contact with its ratchet-wheel g. The actions of the said ratchets 7t and 7c occur at opposite times relatively with the time of movement of the lever d, upon which they are mounted.

The lever (Z is operated inthe well-known manner by means of its rod .9 being joined to an operating-crank on the loom to which the shedding mechanism may be applied.

hat we claim is- 1. The catches a a, formed to increase in length from those at a to those at a", the swing-levers Z), the jack-leversf, the draw-bars c and c, the rods e, 2, c and 6", attached or coupled to their respective levers d and d. at the described respective distances from the centers (Z and (Z thereof, and the said levers (Z and d, in combination, each and all of these parts being constructed and arranged to operate in the manner and to the end substantially as herein specified.

2. The ratchet k and 70', mounted upon the lever d, as shown, the said lever (Z, the ratchetwheels g and g the lever 01, having a pin m, and the rod 0, in combination, all said parts being formed and arranged to perform the functions substantially as herein specified.

RICHI). L. IIATTERSLEY. JAMES HILL.

Witnesses:

SAMUEL HEY, JOHN WI-IITEIIEAD. 

